package com.example.airkiss.utils;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.util.EntityUtils;
import org.springframework.stereotype.Component;

import javax.activation.MimetypesFileTypeMap;
import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.util.Iterator;
import java.util.Map;


/**
 * HTTP通信类
 * @ClassName: HttpConnection
 * @Description: TODO
 * @author 潘广伟(笨笨)
 * @date 2015年04月18日
 *
 */
@Component
public class HttpConnection {
    /**
     * 向指定URL发送GET方法的请求
     * @param url 发送请求的URL
     * @param param 请求参数，请求参数应该是name1=value1&name2=value2的形式。
     * @return URL所代表远程资源的响应
     */
    public  String get(String url, String param) throws Exception {
        String urlName = url + "?" + param;
        return get(urlName);
    }

    /**
     * 向指定URL发送GET方法的请求
     *
     * @param url
     *            发送请求的URL
     * @return URL所代表远程资源的响应
     */
    public  String get(String url) throws Exception {
        String result = "";
        BufferedReader in = null;
        URL realUrl = new URL(url);
        URLConnection conn = realUrl.openConnection();
        conn.setRequestProperty("accept", "*/*");
        conn.setRequestProperty("Accept-Language", "zh-CN,zh;q=0.8");
        conn.setRequestProperty("Content-Type", "text/xml;charset=utf-8");
        conn.setRequestProperty("connection", "keep-alive");
        conn.setRequestProperty("user-agent",
                "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)");
        // 建立实际的连接
        conn.connect();

        // 定义BufferedReader输入流来读取URL的响应
        in = new BufferedReader(new InputStreamReader(conn.getInputStream(), "UTF-8"));
        String line;
        while ((line = in.readLine()) != null) {
            result += line;
        }

        in.close();
        return result;
    }

    /**
     * 向指定URL发送POST方法的请求
     * @param url 发送请求的URL
     * @param content 内容
     * @return URL所代表远程资源的响应
     * @throws Exception
     */
    public String post(String url,String content) throws Exception{
        String result = "";
        URL postUrl = new URL(url);
        HttpURLConnection connection = (HttpURLConnection) postUrl
                .openConnection();
        connection.setDoOutput(true);
        connection.setDoInput(true);
        connection.setRequestMethod("POST");
        connection.setUseCaches(false);
        connection.setInstanceFollowRedirects(true);
        connection.setRequestProperty("Content-Type",
                "application/x-www-form-urlencoded");
        connection.connect();
        DataOutputStream out = new DataOutputStream(connection
                .getOutputStream());
//        out.writeBytes(content);
        out.write(content.getBytes("UTF-8"));
        out.flush();
        out.close(); // flush and close
        BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream(),"utf-8"));//设置编码,否则中文乱码
        String line="";
        while ((line = reader.readLine()) != null){
            result += line;
        }
        reader.close();
        connection.disconnect();
        return result;
    }
    /**
     * 向指定URL发送POST方法的请求
     * @Title: post
     * @Description: TODO
     * @param @param url
     * @param @param textMap
     * @param @return
     * @return String
     * @throws
     */
    public String post(String url, Map<String, String> textMap){
        String res = "";
        HttpURLConnection conn = null;
        String BOUNDARY = "---------------------------123821742118716"; //boundary就是request头和上传文件内容的分隔符
        try {
            URL postUrl = new URL(url);
            conn = (HttpURLConnection) postUrl.openConnection();
            conn.setConnectTimeout(5000);
            conn.setReadTimeout(30000);
            conn.setDoOutput(true);
            conn.setDoInput(true);
            conn.setUseCaches(false);
            conn.setRequestMethod("POST");
            conn.setRequestProperty("Connection", "Keep-Alive");
            conn.setRequestProperty("User-Agent",
                    "Mozilla/5.0 (Windows; U; Windows NT 6.1; zh-CN; rv:1.9.2.6)");
            conn.setRequestProperty("Content-Type",
                    "multipart/form-data; boundary=" + BOUNDARY);

            OutputStream out = new DataOutputStream(conn.getOutputStream());
            // text
            wirteSb(textMap, BOUNDARY, out);

            byte[] endData = ("\r\n--" + BOUNDARY + "--\r\n").getBytes();
            out.write(endData);
            out.flush();
            out.close();

            // 读取返回数据
            StringBuffer strBuf = new StringBuffer();
            BufferedReader reader = new BufferedReader(new InputStreamReader(
                    conn.getInputStream()));
            String line = null;
            while ((line = reader.readLine()) != null) {
                strBuf.append(line).append("\n");
            }
            res = strBuf.toString();
            reader.close();
            reader = null;
        } catch (Exception e) {
            System.out.println("发送POST请求出错。" + url);
            e.printStackTrace();
        } finally {
            if (conn != null) {
                conn.disconnect();
                conn = null;
            }
        }
        return res;
    }

    /**
     * 向指定URL发送POST方法的请求 （带文件）
     * @param url 发送请求的URL
     * @param textMap 文本参数键值
     * @param fileMap 文件键值
     * @return URL所代表远程资源的响应
     * @throws Exception
     */
    public String filePost(String url, Map<String, String> textMap,
                           Map<String, String> fileMap) {
        String res = "";
        HttpURLConnection conn = null;
        String BOUNDARY = "---------------------------123821742118716"; //boundary就是request头和上传文件内容的分隔符
        try {
            URL postUrl = new URL(url);
            conn = (HttpURLConnection) postUrl.openConnection();
            conn.setConnectTimeout(5000);
            conn.setReadTimeout(30000);
            conn.setDoOutput(true);
            conn.setDoInput(true);
            conn.setUseCaches(false);
            conn.setRequestMethod("POST");
            conn.setRequestProperty("Connection", "Keep-Alive");
            conn.setRequestProperty("User-Agent",
                    "Mozilla/5.0 (Windows; U; Windows NT 6.1; zh-CN; rv:1.9.2.6)");
            conn.setRequestProperty("Content-Type",
                    "multipart/form-data; boundary=" + BOUNDARY);

            OutputStream out = new DataOutputStream(conn.getOutputStream());
            // text
            wirteSb(textMap, BOUNDARY, out);

            // file
            if (fileMap != null) {
                Iterator iter = fileMap.entrySet().iterator();
                while (iter.hasNext()) {
                    Map.Entry entry = (Map.Entry) iter.next();
                    String inputName = (String) entry.getKey();
                    String inputValue = (String) entry.getValue();
                    if (inputValue == null) {
                        continue;
                    }
                    File file = new File(inputValue);
                    String filename = file.getName();
                    String contentType = new MimetypesFileTypeMap()
                            .getContentType(file);
                    if (filename.endsWith(".png")) {
                        contentType = "image/png";
                    }
                    if (contentType == null || contentType.equals("")) {
                        contentType = "application/octet-stream";
                    }

                    StringBuffer strBuf = new StringBuffer();
                    strBuf.append("\r\n").append("--").append(BOUNDARY).append(
                            "\r\n");
                    strBuf.append("Content-Disposition: form-data; name=\""
                            + inputName + "\"; filename=\"" + filename
                            + "\"\r\n");
                    strBuf.append("Content-Type:" + contentType + "\r\n\r\n");

                    out.write(strBuf.toString().getBytes());

                    DataInputStream in = new DataInputStream(
                            new FileInputStream(file));
                    int bytes = 0;
                    byte[] bufferOut = new byte[1024];
                    while ((bytes = in.read(bufferOut)) != -1) {
                        out.write(bufferOut, 0, bytes);
                    }
                    in.close();
                }
            }

            byte[] endData = ("\r\n--" + BOUNDARY + "--\r\n").getBytes();
            out.write(endData);
            out.flush();
            out.close();

            // 读取返回数据
            StringBuffer strBuf = new StringBuffer();
            BufferedReader reader = new BufferedReader(new InputStreamReader(
                    conn.getInputStream()));
            String line = null;
            while ((line = reader.readLine()) != null) {
                strBuf.append(line).append("\n");
            }
            res = strBuf.toString();
            reader.close();
            reader = null;
        } catch (Exception e) {
            System.out.println("发送POST请求出错。" + url);
            e.printStackTrace();
        } finally {
            if (conn != null) {
                conn.disconnect();
                conn = null;
            }
        }
        return res;
    }

    private void wirteSb(Map<String, String> textMap, String BOUNDARY, OutputStream out) throws IOException {
        if (textMap != null) {
            StringBuffer strBuf = new StringBuffer();
            Iterator iter = textMap.entrySet().iterator();
            while (iter.hasNext()) {
                Map.Entry entry = (Map.Entry) iter.next();
                String inputName = (String) entry.getKey();
                String inputValue = (String) entry.getValue();
                if (inputValue == null) {
                    continue;
                }
                strBuf.append("\r\n").append("--").append(BOUNDARY).append(
                        "\r\n");
                strBuf.append("Content-Disposition: form-data; name=\""
                        + inputName + "\"\r\n\r\n");
                strBuf.append(inputValue);
            }
            out.write(strBuf.toString().getBytes());
        }
    }


    public static JSONObject doGetJson(String url) throws IOException {
        JSONObject jsonObject =null;
        HttpClient client = HttpClientBuilder.create().build();
        HttpGet httpGet =new HttpGet(url);
        HttpResponse response =  client.execute(httpGet);
        HttpEntity entity =response.getEntity();
        if(entity!=null)
        {
            //把返回的结果转换为JSON对象
            String result =EntityUtils.toString(entity, "UTF-8");
            jsonObject =JSON.parseObject(result);
        }

        return jsonObject;
    }
}